package com.yupi.yupicturebackend.controller;
import cn.dev33.satoken.annotation.SaCheckPermission;
import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.util.RandomUtil;
import cn.hutool.core.util.StrUtil;
import cn.hutool.json.JSONUtil;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.github.benmanes.caffeine.cache.Cache;
import com.github.benmanes.caffeine.cache.Caffeine;
import com.yupi.yupicturebackend.annotation.AuthCheck;
import com.yupi.yupicturebackend.api.AliYunAiApi;
import com.yupi.yupicturebackend.api.aliyunai.model.CreateOutPaintingTaskResponse;
import com.yupi.yupicturebackend.api.aliyunai.model.GetOutPaintingTaskResponse;
import com.yupi.yupicturebackend.api.imagesearch.ImageSearchApiFacade;
import com.yupi.yupicturebackend.api.imagesearch.model.ImageSearchResult;
import com.yupi.yupicturebackend.common.BaseResponse;
import com.yupi.yupicturebackend.common.DeleteRequest;
import com.yupi.yupicturebackend.common.ResultUtils;
import com.yupi.yupicturebackend.constant.UserConstant;
import com.yupi.yupicturebackend.exception.BusinessException;
import com.yupi.yupicturebackend.exception.ErrorCode;
import com.yupi.yupicturebackend.exception.ThrowUtils;
import com.yupi.yupicturebackend.manager.auth.SpaceUserAuthManager;
import com.yupi.yupicturebackend.manager.auth.StpKit;
import com.yupi.yupicturebackend.manager.auth.annotation.SaSpaceCheckPermission;
import com.yupi.yupicturebackend.manager.auth.model.SpaceUserPermissionConstant;
import com.yupi.yupicturebackend.manager.cache.CaffeineCache;
import com.yupi.yupicturebackend.manager.cache.RedisCache;
import com.yupi.yupicturebackend.model.dto.picture.*;
import com.yupi.yupicturebackend.model.entity.Picture;
import com.yupi.yupicturebackend.model.entity.Space;
import com.yupi.yupicturebackend.model.entity.User;
import com.yupi.yupicturebackend.model.enums.PictureReviewStatusEnum;
import com.yupi.yupicturebackend.model.vo.PictureTagCategory;
import com.yupi.yupicturebackend.model.vo.PictureVO;
import com.yupi.yupicturebackend.service.PictureService;
import com.yupi.yupicturebackend.service.SpaceService;
import com.yupi.yupicturebackend.service.UserService;
import org.bouncycastle.asn1.cms.PasswordRecipientInfo;
import org.springframework.beans.BeanUtils;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.concurrent.TimeUnit;

@RestController
@Service
@RequestMapping("/picture")
public class PictureController {

    @Resource
    private PictureService pictureService;


    @Resource
    private UserService userService;

    @Resource
    private RedisCache redisCache;

    @Resource
    private CaffeineCache caffeineCache;

    @Resource
    private SpaceService  spaceService;

    @Resource
    private AliYunAiApi aliYunAiApi;

    @Resource
    private SpaceUserAuthManager spaceUserAuthManager;




    /**
     * 上传图片（可重新上传）
     */
    @PostMapping("/upload")
    @SaSpaceCheckPermission(value = SpaceUserPermissionConstant.PICTURE_UPLOAD)
    public BaseResponse<PictureVO> uploadPicture(@RequestPart("file") MultipartFile multipartFile, PictureUploadRequest pictureUploadRequest, HttpServletRequest request) {
        System.out.println("=== 进入图片上传接口 ===");
        System.out.println("请求参数: " + (pictureUploadRequest != null ? pictureUploadRequest.toString() : "null"));
        System.out.println("当前SPACE登录状态: " + StpKit.SPACE.isLogin());
        if (StpKit.SPACE.isLogin()) {
            System.out.println("当前登录ID: " + StpKit.SPACE.getLoginId());
            System.out.println("当前Token: " + StpKit.SPACE.getTokenValue());
        }
        
        User loginUser = userService.getLoginUser(request);
        PictureVO pictureVO = pictureService.uploadPicture(multipartFile, pictureUploadRequest, loginUser);
        return ResultUtils.success(pictureVO);
    }
    /**
     * 通过 URL 上传图片（可重新上传）
     */
    @PostMapping("/upload/url")
    @SaSpaceCheckPermission(value = SpaceUserPermissionConstant.PICTURE_UPLOAD)
    public BaseResponse<PictureVO> uploadPictureByUrl(
            @RequestBody PictureUploadRequest pictureUploadRequest,
            HttpServletRequest request) {
        User loginUser = userService.getLoginUser(request);
        String fileUrl = pictureUploadRequest.getFileUrl();
        PictureVO pictureVO = pictureService.uploadPicture(fileUrl, pictureUploadRequest, loginUser);
        return ResultUtils.success(pictureVO);
    }


    /**
     * 删除图片
     */
    @PostMapping("/delete")
    @SaSpaceCheckPermission(value = SpaceUserPermissionConstant.PICTURE_DELETE)
//    @SaCheckPermission(value = SpaceUserPermissionConstant.PICTURE_DELETE)
    public BaseResponse<Boolean> deletePicture(@RequestBody DeleteRequest deleteRequest, HttpServletRequest request) {
        if (deleteRequest == null || deleteRequest.getId() <= 0) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        User loginUser = userService.getLoginUser(request);
        pictureService.deletePicture(deleteRequest.getId(), loginUser);
        return ResultUtils.success(true);
    }

    /**
     * 更新图片（仅管理员可用）
     */
    @PostMapping("/update")
    @AuthCheck(mustRole = UserConstant.ADMIN_ROLE)
    public BaseResponse<Boolean> updatePicture(@RequestBody PictureUpdateRequest pictureUpdateRequest, HttpServletRequest request) {
        if (pictureUpdateRequest == null || pictureUpdateRequest.getId() <= 0) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        // 将实体类和 DTO 进行转换
        Picture picture = new Picture();
        BeanUtils.copyProperties(pictureUpdateRequest, picture);
        // 注意将 list 转为 string
        picture.setTags(JSONUtil.toJsonStr(pictureUpdateRequest.getTags()));
        // 数据校验
        pictureService.validPicture(picture);
        // 判断是否存在
        long id = pictureUpdateRequest.getId();
        Picture oldPicture = pictureService.getById(id);
        ThrowUtils.throwIf(oldPicture == null, ErrorCode.NOT_FOUND_ERROR);

        User loginUser = userService.getLoginUser(request);
        //补充审核参数
        pictureService.fillReviewParams(picture, loginUser);
        // 操作数据库
        boolean result = pictureService.updateById(picture);
        ThrowUtils.throwIf(!result, ErrorCode.OPERATION_ERROR);
        return ResultUtils.success(true);
    }

    /**
     * 根据 id 获取图片（仅管理员可用）
     */
    @GetMapping("/get")
    @AuthCheck(mustRole = UserConstant.ADMIN_ROLE)
    public BaseResponse<Picture> getPictureById(long id, HttpServletRequest request) {
        ThrowUtils.throwIf(id <= 0, ErrorCode.PARAMS_ERROR);
        // 查询数据库
        Picture picture = pictureService.getById(id);
        ThrowUtils.throwIf(picture == null, ErrorCode.NOT_FOUND_ERROR);
        // 获取封装类
        return ResultUtils.success(picture);
    }

    /**
     * 根据 id 获取图片（封装类）
     */
    @GetMapping("/get/vo")
    public BaseResponse<PictureVO> getPictureVOById(long id, HttpServletRequest request) {
        ThrowUtils.throwIf(id <= 0, ErrorCode.PARAMS_ERROR);
        // 查询数据库
        Picture picture = pictureService.getById(id);
        // 空间权限校验
        Long spaceId = picture.getSpaceId();
        Space space = null;
        if(spaceId!= null){
            boolean hasPermission = StpKit.SPACE.hasPermission(SpaceUserPermissionConstant.PICTURE_VIEW);
            ThrowUtils.throwIf(!hasPermission, ErrorCode.NO_AUTH_ERROR);
            // 使用注解来实现了权限校验
            space = spaceService.getById(spaceId);
            ThrowUtils.throwIf(space == null, ErrorCode.NOT_FOUND_ERROR, "空间不存在");
        }
//        pictureService.checkPictureAuth(picture, userService.getLoginUser(request));
        User loginUser = userService.getLoginUser(request);
        PictureVO pictureVO = pictureService.getPictureVO(picture, request);
        List<String> permissionList = spaceUserAuthManager.getPermissionList(space, loginUser);
        pictureVO.setPermissionList(permissionList);
        // 获取封装类
        return ResultUtils.success(pictureVO);
    }

    /**
     * 分页获取图片列表（仅管理员可用）
     */
    @PostMapping("/list/page")
    @AuthCheck(mustRole = UserConstant.ADMIN_ROLE)
    public BaseResponse<Page<Picture>> listPictureByPage(@RequestBody PictureQueryRequest pictureQueryRequest) {
        long current = pictureQueryRequest.getCurrent();
        long size = pictureQueryRequest.getPageSize();
        // 查询数据库
        Page<Picture> picturePage = pictureService.page(new Page<>(current, size),
                pictureService.getQueryWrapper(pictureQueryRequest));
        return ResultUtils.success(picturePage);
    }

    /**
     * 分页获取图片列表（封装类）
     */
    @PostMapping("/list/page/vo")
    public BaseResponse<Page<PictureVO>> listPictureVOByPage(@RequestBody PictureQueryRequest pictureQueryRequest,
                                                             HttpServletRequest request) {
        long current = pictureQueryRequest.getCurrent();
        long size = pictureQueryRequest.getPageSize();
        // 限制爬虫
        ThrowUtils.throwIf(size >2000 , ErrorCode.PARAMS_ERROR);
        //空间权限校验
        Long spaceId = pictureQueryRequest.getSpaceId();
        if (spaceId == null){
            //用户只能查看已过审的
            pictureQueryRequest.setReviewStatus(PictureReviewStatusEnum.PASS.getValue());
            pictureQueryRequest.setNullSpaceId(true);
        }else{
            // 私有空间
            boolean hasPermission = StpKit.SPACE.hasPermission(SpaceUserPermissionConstant.PICTURE_VIEW);
            ThrowUtils.throwIf(!hasPermission, ErrorCode.NO_AUTH_ERROR, "无权限");
        }
        //构建缓存key
        String queryCondition = JSONUtil.toJsonStr(pictureQueryRequest);
        String hashKey = DigestUtils.md5DigestAsHex(queryCondition.getBytes());
        String rediskey = String.format("picture:listPictureVOByPage:%s", hashKey);
        //先从本地缓存中获取数据，如果没有就存入数据库
        String caffcacheValue = caffeineCache.get(rediskey);
        if (caffcacheValue != null) {
            Page<PictureVO> cachePage = JSONUtil.toBean(caffcacheValue, Page.class);
            return ResultUtils.success(cachePage);
        }
        //如果本地缓存中没有数据，则从redis中查找
        String cacheValue = redisCache.get(rediskey);
        if (cacheValue != null) {
            Page<PictureVO> cachePage = JSONUtil.toBean(cacheValue, Page.class);
            return ResultUtils.success(cachePage);
        }
        // 如果未命中缓存，则从数据库中查询
        Page<Picture> picturePage = pictureService.page(new Page<>(current, size), pictureService.getQueryWrapper(pictureQueryRequest));
        Page<PictureVO> pictureVOPage = pictureService.getPictureVOPage(picturePage, request);
        //存入本地和redis缓存
        String cacheValue2 = JSONUtil.toJsonStr(pictureVOPage);
        caffeineCache.set(rediskey, cacheValue2);
        redisCache.set(rediskey, cacheValue2);
        // 获取封装类
        return ResultUtils.success(pictureService.getPictureVOPage(picturePage, request));
    }
//    @Deprecated
//    @PostMapping("/list/page/vos")
//    public BaseResponse<Page<PictureVO>> listPictureVOByPageWithCache(@RequestBody PictureQueryRequest pictureQueryRequest,
//                                                             HttpServletRequest request) {
//        long current = pictureQueryRequest.getCurrent();
//        long size = pictureQueryRequest.getPageSize();
//        // 缓存限制爬虫
//        ThrowUtils.throwIf(size > 100000, ErrorCode.PARAMS_ERROR);
//        // 普通用户只能查看已过审的
//        pictureQueryRequest.setReviewStatus(PictureReviewStatusEnum.PASS.getValue());
//        //构建缓存key
//        String queryCondition = JSONUtil.toJsonStr(pictureQueryRequest);
//        String hashKey = DigestUtils.md5DigestAsHex(queryCondition.getBytes());
//        String rediskey = String.format("picture:listPictureVOByPage:%s", hashKey);
//        //先从本地缓存中获取数据，如果没有就存入数据库
//        String caffcacheValue = caffeineCache.get(rediskey);
//        if (caffcacheValue != null) {
//            Page<PictureVO> cachePage = JSONUtil.toBean(caffcacheValue, Page.class);
//            return ResultUtils.success(cachePage);
//        }
//        //如果本地缓存中没有数据，则从redis中查找
//        String cacheValue = redisCache.get(rediskey);
//        if (cacheValue != null) {
//            Page<PictureVO> cachePage = JSONUtil.toBean(cacheValue, Page.class);
//            return ResultUtils.success(cachePage);
//        }
//        // 如果未命中缓存，则从数据库中查询
//        Page<Picture> picturePage = pictureService.page(new Page<>(current, size), pictureService.getQueryWrapper(pictureQueryRequest));
//        Page<PictureVO> pictureVOPage = pictureService.getPictureVOPage(picturePage, request);
//        //存入本地和redis缓存
//        String cacheValue2 = JSONUtil.toJsonStr(pictureVOPage);
//        caffeineCache.set(rediskey, cacheValue2);
//        redisCache.set(rediskey, cacheValue2);
//        //获取封装类并返回
//        return ResultUtils.success(pictureVOPage);
//    }

    /**
     * 编辑图片（给用户使用）
     */
    @PostMapping("/edit")
    @SaSpaceCheckPermission(value = SpaceUserPermissionConstant.PICTURE_EDIT)
    public BaseResponse<Boolean> editPicture(@RequestBody PictureEditRequest pictureEditRequest, HttpServletRequest request) {
        if (pictureEditRequest == null || pictureEditRequest.getId() <= 0) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        pictureService.editPicture(pictureEditRequest, userService.getLoginUser(request));
        return ResultUtils.success(true);
    }

    @GetMapping("/tag_category")
    public BaseResponse<PictureTagCategory> listPictureTagCategory() {
        PictureTagCategory pictureTagCategory = new PictureTagCategory();
        List<String> tagList = Arrays.asList("热门", "搞笑", "生活", "高清", "艺术", "校园", "背景", "简历", "创意");
        List<String> categoryList = Arrays.asList("模板", "电商", "表情包", "素材", "海报");
        pictureTagCategory.setTagList(tagList);
        pictureTagCategory.setCategoryList(categoryList);
        return ResultUtils.success(pictureTagCategory);
    }

    @PostMapping("/review")
    @AuthCheck(mustRole = UserConstant.ADMIN_ROLE)
    public BaseResponse<Boolean> doPictureReview(@RequestBody PictureReviewRequest pictureReviewRequest, HttpServletRequest request)
    {
        ThrowUtils.throwIf(pictureReviewRequest==null, ErrorCode.PARAMS_ERROR);
        User loginUser = userService.getLoginUser(request);
        pictureService.doPictureReview(pictureReviewRequest, loginUser);
        return ResultUtils.success(true);
    }

    @PostMapping("/upload/batch")
    @AuthCheck(mustRole = UserConstant.ADMIN_ROLE)
    public BaseResponse<Integer> uploadPictureByBatch(
            @RequestBody PictureUploadByBatchRequest pictureUploadByBatchRequest,
            HttpServletRequest request
    ) {
        ThrowUtils.throwIf(pictureUploadByBatchRequest == null, ErrorCode.PARAMS_ERROR);
        User loginUser = userService.getLoginUser(request);
        int uploadCount = pictureService.uploadPictureByBatch(pictureUploadByBatchRequest, loginUser);
        return ResultUtils.success(uploadCount);
    }

    /**
     * 以图搜图
     */
    @PostMapping("/search/picture")
    public BaseResponse<List<ImageSearchResult>> searchPictureByPicture(@RequestBody SearchPictureByPictureRequest searchPictureByPictureRequest) {
        ThrowUtils.throwIf(searchPictureByPictureRequest == null, ErrorCode.PARAMS_ERROR);
        Long pictureId = searchPictureByPictureRequest.getPictureId();
        ThrowUtils.throwIf(pictureId == null || pictureId <= 0, ErrorCode.PARAMS_ERROR);
        Picture oldPicture = pictureService.getById(pictureId);
        ThrowUtils.throwIf(oldPicture == null, ErrorCode.NOT_FOUND_ERROR);
        List<ImageSearchResult> resultList = ImageSearchApiFacade.searchImage(oldPicture.getUrl());
        return ResultUtils.success(resultList);
    }
    /**
     * 以颜色搜图
     */
    @PostMapping("/search/color")
    @SaSpaceCheckPermission(value = SpaceUserPermissionConstant.PICTURE_VIEW)
    public BaseResponse<List<PictureVO>> searchPictureByColor(@RequestBody SearchPictureByColorRequest searchPictureByColorRequest, HttpServletRequest request) {
        ThrowUtils.throwIf(searchPictureByColorRequest == null, ErrorCode.PARAMS_ERROR);
        String picColor = searchPictureByColorRequest.getPicColor();
        Long spaceId = searchPictureByColorRequest.getSpaceId();
        User loginUser = userService.getLoginUser(request);
        List<PictureVO> result = pictureService.searchPictureByColor(spaceId, picColor, loginUser);
        return ResultUtils.success(result);
    }
    /**
     * 批量编辑图片
     */
    @PostMapping("/edit/batch")
    @SaSpaceCheckPermission(value = SpaceUserPermissionConstant.PICTURE_EDIT)
    public BaseResponse<Boolean> editPictureByBatch(@RequestBody PictureEditByBatchRequest pictureEditByBatchRequest, HttpServletRequest request) {
        ThrowUtils.throwIf(pictureEditByBatchRequest == null, ErrorCode.PARAMS_ERROR);
        User loginUser = userService.getLoginUser(request);
        pictureService.editPictureByBatch(pictureEditByBatchRequest, loginUser);
        return ResultUtils.success(true);
    }

    /**
     * 创建 AI 扩图任务
     */
    @PostMapping("/out_painting/create_task")
    @SaSpaceCheckPermission(value = SpaceUserPermissionConstant.PICTURE_EDIT)
    public BaseResponse<CreateOutPaintingTaskResponse> createPictureOutPaintingTask(
            @RequestBody CreatePictureOutPaintingTaskRequest createPictureOutPaintingTaskRequest,
            HttpServletRequest request) {
        if (createPictureOutPaintingTaskRequest == null || createPictureOutPaintingTaskRequest.getPictureId() == null) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        User loginUser = userService.getLoginUser(request);
        CreateOutPaintingTaskResponse response = pictureService.createPictureOutPaintingTask(createPictureOutPaintingTaskRequest, loginUser);
        return ResultUtils.success(response);
    }

    /**
     * 查询 AI 扩图任务
     */
    @GetMapping("/out_painting/get_task")
    public BaseResponse<GetOutPaintingTaskResponse> getPictureOutPaintingTask(String taskId) {
        ThrowUtils.throwIf(StrUtil.isBlank(taskId), ErrorCode.PARAMS_ERROR);
        GetOutPaintingTaskResponse task = aliYunAiApi.getOutPaintingTask(taskId);
        return ResultUtils.success(task);
    }
}
